We have baseboard heating and I have torn them apart like 4 times and we looked everywhere, like torn the whole upstairs apart 3 times. I actually just left and left a mouse by the rack to see if the calmness will make her come out. There are rugs so I can't do the flour trick and we have multiple hides around the rooms. I suppose all we can do is wait... Is there a point in time where it's no point in looking anymore kinda like a "if you haven't found her by now she's dead..." point?